| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.73 | 0.88 | -0.15 |
| Feb | 0.71 | 0.79 | -0.08 |
| Mar | 1.07 | 1.13 | -0.06 |
| Apr | 1.86 | 2.03 | -0.17 |
| May | 3.01 | 3.11 | -0.10 |
| Jun | 4.45 | 4.47 | -0.02 |
| Jul | 3.79 | 4.10 | -0.31 |
| Aug | 3.35 | 3.44 | -0.09 |
| Sep | 3.21 | 3.44 | -0.23 |
| Oct | 2.61 | 2.79 | -0.18 |
| Nov | 1.36 | 1.47 | -0.11 |
| Dec | 0.99 | 1.21 | -0.22 |
27.14 | 28.86 | -1.72 |